Which Is an Untrue Statement Concerning the Diels-Alder Reaction

Multiple Choice

Which is an untrue statement concerning the Diels-Alder reaction?

A) The reaction is a syn addition.
B) The diene must be in the s-cis conformation to react.
C) Most Diels-Alder reactions are reversible.
D) Generally,the adduct formed most rapidly is the exo product.
E) Electron donating groups on the diene and electron withdrawing groups on the dieneophile favor adduct formation.